函数f(x)=1+
x+cosx在
上的单调递增区间是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
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2022高三·全国·专题练习 查看更多[4]
(已下线)第13讲 导数与函数的单调性、极值与最值(练)- 2022年高考数学一轮复习讲练测(课标全国版)广东省东莞市七校2022届高三上学期12月联考数学试题(已下线)专题5.2 利用导数研究函数的单调性-2021-2022学年高二数学特色专题卷(人教A版2019选择性必修第二册)甘肃省金昌市永昌县第一高级中学2021-2022学年高二下学期期中数学(理)试题
更新时间:2021-09-19 11:59:14
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【知识点】 利用导数求函数的单调区间(不含参)
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【推荐1】已知奇函数
的导函数为
,若当
时
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的单调增区间为______ .
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【推荐2】如图,在四面体
中,点
分别在棱
上,且平面
平面
为
内一点,记三棱锥
的体积为
,设
,对于函数
,则下列结论正确的是__________ .
![](https://img.xkw.com/dksih/QBM/2019/5/7/2198416812236800/2199850240827392/STEM/afd2b6d3d02a4cf1bde4707bdf2ea8a4.png?resizew=183)
①当
时,函数
取到最大值;②函数
在
上是减函数;③函数
的图象关于直线
对称;④不存在
,使得
(其中
为四面体
的体积).
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①当
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